Place the thinly sliced cucumbers into a colander and sprinkle lightly with kosher salt. Leave in the sink to drain for 15 minutes.
Meanwhile, whisk together 1/2 teaspoon salt, sugar, white vinegar and dill together. Set aside.
Shake colander well to get as much liquid off the cucumbers as possible. Add cucumbers to vinegar mixture and toss to coat. Place in fridge for 1 to 3 hours to allow flavors to mingle.